Cotton extracting and cleaning machine.



B. S. ELLIOTT.

COTTON EXTRAOTING AND CLEANING MACHINE.

' APPLICATION FILED DEO.23,1912.'-

Patented Dec. 16,1913.

BRUCE s. ELLIO.TT,,'OE ST. LOUIS, MISSOURI, ASSIGNQR 'ro ALsor rnocnss COMPANY,

- wa ea r. A lWQRAT-ION F MISSOURI.

.co'rr'olv Extra-norms aivn ctnalvrne MACHINE.

nom nee.

Specification of Letters atent. Pat t d D 1 1913 Application filed December 23,1912. fEerial No- 738,115;

To aZZ whom it may concern:

'.Be it known that I, Bnucn S, ELLIOTT, a citizen of the United States, residing' in the city of-St. Louis and State of Missouri, have invented new and useful Improvements in Cotton Extracting andCleaning- Machines,

of which the following is a specification.

This invention relates to cotton extracting and cleaning machines, and has for its object improvements in the mach'ne heretofore patented to J ohnE. Mitchell, No. 1,030,913,

The present invention is, in effect, supplemental to two appli-. catio-nsof John E. Mitchell filed of even date herewith, wherein is disclosed the idea of forcibly projectingcotton at the bottom of ahull board into contact with a saw cyl- 'inder, one of said'applications showing a vibratory, and the other a reciprocatory, hull board as means of accomplishing such object. In the present invention the same -principle of operation is retained, but is carried out by meansof an air blast discharged from the lower end of the hull board whereby the cotton passingto such lower' end' is blown over against the sawcrushing'roll 6, guard 7, dofiier-brush 8, and

cylinder while the hull particles are ,per-

mitted to fall through the opening provided between the edge of the hull board and said saw cylinder. y

In the accompanying drawing the figure illustrates a central cross sectional viewthrough a machine of the Mitchell type having my invention applied thereto.

Referring now to the drawing, the casing 1, feed rolls 2, boll crushing cylinder 3, saw cylinder 4, pod 'expeller 5, supplemental conveyer 9 are constructed and arranged as fully illustrated'and described in the patent of Mitchell aforesaid, or in his applications filed of even date herewith, and as they form no part of my invention they need not.

be more fully described herein.

The numeral 10 indicatesmy improved hull board which is secured at its upper end to a cross bar 11 supporting one end of the screen 12 which surrounds the boll crushing cylinder 3. This hull board is made hollow and is preferably, though not necessarily, constructed of sheet metal. The upper surface of this hull board is provided toward its lower end with an inclined portion 13 extending at a less angle to the saw cylinder than the upper portion 14 of said hull board prevents the unopened bolls and larger pieces of hull from passing into thespace between the end portion 13 and the saw cylinder. The lower end portion of the hull board as a-whole is contracted in area, and along its bottom edge, facing the saw cylinder, is provided with a discharge nozzle '16 provided with a relatively narrow slot 17 for permitting'a blast of air to be directed toward the saw cylinder.

The numeral 18 indicates a fan which is run by a belt 19' from a pulley 20,whicl1 is on the shaft 21 of the conveyer 9 which, in turn, s run by a belt 22 on a pulley 23.

21 lndicates a conduit leading from the fan which communicates with an opening 25 leading'into the interior of the hull board 10.

whereby a shoulder 15 is provided which- In operation a blastof air will be continuously" discharged from the elongated opening 17 against the saw cylinder, and as the cotton, mixed with hull particles, in fallmg reaches the opening 26 between the mouth of the nozzle 16 and the saw cylinder the cotton will be blown by the blast of air against the saw cylinder and be carried up.- ward thereby, while the hulls .will be permitted to fall and ultimately be dischargedv from the machine by the conveyer 9. The shoulder 15 prevents, as stated, the unopened bolls and larger pieces of hull from passing into the space between the inclined portion '13 and the saw cylinder, said bolls and pieces 'of hull being knocked upward by the saw and ultimately passing between the crushing roll 6 and the guard 7 whereby they are crushed and, returned to the agitating chamher for separation from the cotton.

. It will be seen from the above description that the blast of air accomplishes the same purpose as that effected by the vibratory orreciprocating hull boards above referred to, and by regulating the blast of air a prace. tically perfect separation of the hull parti-. cles and cotton can be obtained. By regulating the blast of air I mean having a blast of justsuflicient force to insure that not only cotton particles, but also 'l'iullparticlos with cotton adhering thereto, shall be projected into contact with the saw cylinder.

I claim: a v

1. In a cotton extracting and cleaning machine, a saw cylinder, a hull board, thc lower end of which defines the size of an opening mist the saw cylinder, and means for direct- \ihg a blast of air from the hull board toward the saw cylinder.

' 2. In a cotton extracting and cleaning machine, a saw cylinder, a hull board, the lower end of which defines the size of an opening chine, a saw cylinder, a hollow hull board having its lowerend defining the size of an outlet past tlie'saw cylinder and provided with an opening, and means for continuously" forcing a blast of air into said hull I board and through said opening.

4. In a cotton extracting and cleaning Ina- IIQSSGS.

chine, a saw cylinder, a hollow hull board directed toward said saw cylinder and having its lower end portion inclined at a less angle thereto, said hull board being provided at its lower end with a discharge opening, and'means' for forcing air under pressure into said hull board whereby a" blast of air will be directed through saidv opening toward-the saw cylinder;

In testimony whereof, I have hereunto set my hand. in presence of two subscribing wit- BRUCE S. ELLIOT-T.

Witnesses:

JOHN E. MITCHELL, STELLA Hum. 

